SI5345B-D06747-GM

Clock Generators, PLLs, Frequency Synthesizers Overview

The SI5345B-D06747-GM is a 10-output jitter attenuator and clock multiplier from the Si5345 family, manufactured by Skyworks Solutions. It utilizes fourth-generation DSPLL and MultiSynth technologies to generate any combination of output frequencies from any input frequency. The device supports differential inputs up to 750 MHz and LVCMOS inputs up to 250 MHz. Output frequencies range from 100 Hz to 350 MHz for differential formats and 100 Hz to 250 MHz for LVCMOS. It features ultra-low jitter performance of 90 fs rms and meets ITU-T G.8262 SyncE requirements. The component operates within a temperature range of -40°C to +85°C and is housed in a 64-QFN package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates any combination of output frequencies from any input frequency using integer and fractional synthesis.
• Features ultra-low jitter performance of 90 fs rms with digitally programmable jitter attenuation bandwidth.
• Supports hitless input clock switching between fractionally related inputs and glitchless on-the-fly output frequency changes.
• Includes in-circuit programmable non-volatile memory (NVM) for storing configuration data to ensure known power-up states.

Clock Generators, PLLs, Frequency Synthesizers Applications

• OTN muxponders and transponders
• 10/40/100 G networking line cards
• GbE/10 GbE/100 GbE Synchronous Ethernet (ITU-T G.8262)
• Carrier Ethernet switches
• SONET/SDH line cards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm factory preprogramming details. Confirm package availability and lead times through authorized distributors. Ensure compatibility with ClockBuilder Pro software for configuration validation before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when low jitter attenuation is required for high-speed networking applications. The Si5345B variant specifically limits output frequencies to 350 MHz, distinguishing it from higher-frequency A or C variants. Verify that the 10-output count and QFN-64 package fit the design constraints. Check if the integrated loop filter and NVM capabilities meet the system's synchronization and reliability needs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5345 Rev D family, which combines DSPLL and MultiSynth technologies. It is designed for applications requiring precise clock generation and jitter cleaning. The part number indicates a specific factory preprogrammed configuration, as custom OPNs are assigned by Skyworks based on unique numerical sequences representing the configuration.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Si5345A-D-GM offers a wider output frequency range up to 1028 MHz. Si5345C-D-GM provides integer-only synthesis up to 1028 MHz. Si5345D-D-GM matches the 350 MHz limit but may have different synthesis characteristics. Verify electrical specifications and pin compatibility before substitution.